SHARK VS SHARK

Blacktip reef sharkvsCookiecutter shark

Length, weight and bite evidence—plus context from a human, city bus and blue whale. Every number below carries its uncertainty with it.

LivingCarcharhinus melanopterus×LivingIsistius brasiliensis
QUICK VERDICT

Blacktip reef shark is about 3.2× longer by these reference values.

Blacktip reef shark uses a 1.8 m upper reference, compared with 0.56 m for Cookiecutter shark. Blacktip reef shark's weight reference is about 4.8× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ABlacktip reef sharkrecorded to 1.8 m / 5.9 ft
BCookiecutter sharkabout 0.56 m / 22 in
REFAdult human1.8 m · about 80 kg

Length bars use upper comparison values and do not show body depth, tail proportion or typical adult size. A long thresher tail, for example, does not equal whale-shark body mass.

02

THE NUMBERS

Side by side.

MeasureBlacktip reef sharkCookiecutter shark
Length referencerecorded to 1.8 m / 5.9 ftabout 0.56 m / 22 in
Weight referencelarge-adult reference about 24 kg / 53 lblarge-adult reference about 5 kg / 11 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatShallow Indo-Pacific reefsDeep tropical and subtropical oceans
DietFishes, cephalopods and crustaceansPlugs of tissue from larger animals plus small prey
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Blacktip reef shark is represented by recorded to 1.8 m / 5.9 ft; Cookiecutter shark by about 0.56 m / 22 in. Most individuals are under 1.6 m. Weight is a rounded comparison reference.

Bite evidence

Blacktip reef shark: No standardized maximum is used. Cookiecutter shark: Bite shape is documented; a comparable force maximum is not.

Living versus extinct

Both species are living, but record-sized individuals are rare. These upper references should not be read as normal adult size.

Ecology changes the matchup

It is far smaller than the offshore giants people often picture. Its bite removes a round plug; size alone does not predict ecological impact.

04

TRACE THE CLAIMS

Sources and limits.

Blacktip reef sharkFlorida MuseumCookiecutter sharkSmithsonian OceanHow we standardize comparisonsRead the methodology →